Water-supply connection



. I 1,642,672 Sept. 20, w. J. FENNELL v j WATER SUPPLY CONNECTION Filed Dec. 50, 1926 6 y (/l 1 I /7 Jun 31mg,

I 7 BY W ATTORNEY."

Patented Sept. 20, 1927. v

UNITED.f-sr-Arssf PA N DF B .1. warrant, or mrnwnuxnaWrscdnsm, ass'ronon 'ro nvmnunn Moron comm, or umwacxnn;. wrsco1vsm,n conrons'rro vor Wisconsin.

warns-sunny comincrron Application fled llecember 30, 1986. Serial No. 158,024.

Thisinvention relates to improvements in water supply connections of the general type shown in the patent toMould, No. 1,502,479,

shaft housing partially cut away to a vertig call axial section.

"1 gu shaft housing.

Like parts are identified by the same reference characters views.

In the device shown in the patent above referred to, a drive shaft housing was longitudlnallygrooved and .a water supply pipe was fitted bodily into the groove to lie wholly within the radlus of the housing-wall. By the present invention-the necessity of fittlng 1 such a pipe is obviated.

' Instead ofusing'a single tube of the requisite thickness of wall in the manufacture of the drive shaft housing, v the present invenhon-contemplates the use of two tubes-having relatively thinner walls and together adapted to have the requisite strength. The outer tube 5 presents a uniformly cylindrical outer surface of neat and attractive appear-' ance. This outer surface need not be broken except for the apertures 6 and 7 which af= ford communication throughv the wall of the outer tube to the water assage.

v The inner tube 10 sides telescopically within the outer-tube and is longitudinally grooved at 11 as if to receive a pipe" in accordance with theinvention disclosed in the above mentioned patent. Due, however, to the provision of two telescopically .related to es 5 and 10, no pipe is necessary in the practice of the presentinvention, and

the water is confined withinthe channel 11 y by the wall of the-outertubefi which crosses such channel unbroken except for the a ertures 6 and 7. The channel is of suc a len h as to terminate immediately adjacent sai a rtures. The close fit of tube 10 within tu makes it unnecessary to fasten the tubes toof this invention to utilize g present invention. re 3 IS an end elevation of the drive throughout the several ever, that two tubes which may rea 5 beyond the endsfof channel 11 gether in any wa since in practice .no

. water will escape r'om the channel;

The water-is delivered -to the channelthrough any suitable fitting applied to tube w 5 in registry withiaperture 7 and leaves the channel-through aperture 6 anda suitable distributing fitting whereby the water "may be suppliedto the cooling system of the en gine re ardless" of the rotativeposition of the she t housing and related parts.

My discovery that no means-of sealing 65" A channel 11 is necessary obviously contributes greatly to the practical'advantag'es of the] It might reasonably-J be anticipated that soldering or brazing or cementing tubes 5 4 and 10 would benecessary to make a tight joint around channel 11. It is found how,- (iily be telescoped together manually will withstand even a-considerable degree of air pressure without leakage, and such water pressure as exlsts in channel 11 cannot possibly cause any water to leak out. 'It is probable that the capillary attraction of the two brass surfaces of the concentric tubes contributes to" this unexpected result. In any event, the 1 manufacturing advantage is great.

' Attention is called to the fact that thecin cumferential extent of the channel is immaterial to the success of'this invention so long as the ends of the two tubes arein closely nested ,position. The illustrated form of the invention, however, inwhichthe channel comprises a narrow. .roove extendin longij tudinally of them es'is preferre to an alternative construction in which the: inner to reduce its diameter'for a portion-of. its length while leaving it symmetricall clrcular in cross section. The reasons or. preferring the illustrated construction are practicaland are based u on the'fact that the tube might-be 'dr'awn'intermediate' its ends device disclosed is ma e with a minimum of labor from standard parts, two .standard -commercial sizes of' tublng being fitted telescopically together after grooving the innermost tube by well known andcommercially available machines.

.I claim: e i i 1. A shaft housing for the purposes described comprising inner and outer tubes".

concentrically nested .together and closely fitted in water tight relation throughout their entire peripheries at their ends, one of said tubes bein channeled intermediate its ends to provi e a- Water passage between I said tubes for. a portion of their length.

2. A shaft housing for the purpose described, said'shaft housing comprising a pair of telescopically related tubes closely nested at their ends in concentric relation, one of said tubes being channeled intermediate. its ends to provide a water passage between said tubes, and said passage being sealed solely by the juxtaposition of the walls of said tubes at the ends thereof.

' 3. A shaft housing comprising a pair of telescopically related tubes" having their ends closely nested in concentric relation, the wall of the inner tube being pressed inwardly for a portion of the length of said tube to provide a water channel between said tubes, and

the wall of the outer tube being apertured to afford communication with said channel. LA shafthousing comprising a pair of telescopically related tubes having their ends closely nested in concentric'relation, the wall of the inner tube being pressed inwardremote points and provided intermediate said points with radially" spaced portions comprising the walls of a water passage, one of said tubes being provided with a port afl'ording communication with said passage.

6. A device of the character described 1y for aportion of the length of said tube to 4 comprising an outer tube provided with spaced ports and an inner tube secured in concentric relation within said outer tube and closely fitted thereto beyond said ports,

said inner tube having its intermediate por- I tion formed inwardly from one port to'the other whereby to aiford a passage thcrebetween of which said tubes are the walls.

,WILLIAM "J. FENNELL. 

